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 หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Ethanol Sensing of La1-xSrxFeO3 (x= 0, 0.1 and 0.3) Prepared by Metal-Organic Complex Decomposition) ผู้เขียน: ธรรมนูญ ทวีชัย, Anurat Wisitsoraat,  ดร.อภิรัตน์ เลาห์บุตรี, รองศาสตราจารย์ , ดร.นัทธมน คูณแสง, รองศาสตราจารย์ สื่อสิ่งพิมพ์:pdf AbstractThe perovskite La1-xSrxFeO3 (x= 0, 0.1 and 0.3) powders were successfully prepared by the decomposition of metal-organic complexes which were synthesized from the reaction of La(NO3)3.6H2O, Fe(NO3)3.9H2O and N(CH2CH2OH)3 at 190?C in ethylene glycol solvent. The amounts of strontium nitrate used as a dopant were varied by 0, 10.0 and 30.0 mol%. The La1-xSrxFeO3 powders were obtained by calcination of metal-organic complexes at 850?C for 4 h and then were characterized by FTIR, XRD, SEM and BET. Based on semiconducting properties La1-xSrxFeO3 films prepared by spin coating were investigated for ethanol sensing. The results showed that 10% Sr(II) doped LaFeO3-based sensor, La0.9Sr0.1FeO3, exhibited the highest sensitivity to ethanol vapour with a minimum concentration of 100 ppm at an operating temperature of 300?C. |
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